/*
 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */
package jdk.vm.ci.hotspot;

import jdk.vm.ci.meta.JavaConstant;
import jdk.vm.ci.meta.JavaKind;

/**
 * Represents a constant that was retrieved from a constant pool. Used to keep track of the constant
 * pool slot for the constant.
 */
public final class HotSpotConstantPoolObject implements JavaConstant {

    public static JavaConstant forObject(HotSpotResolvedObjectType type, int cpi, JavaConstant object) {
        return new HotSpotConstantPoolObject(type, cpi, object);
    }

    private final JavaConstant constant;
    private final HotSpotResolvedObjectType type;
    private final int cpi;

    public HotSpotResolvedObjectType getCpType() {
        return type;
    }

    public int getCpi() {
        return cpi;
    }

    HotSpotConstantPoolObject(HotSpotResolvedObjectType type, int cpi, JavaConstant constant) {
        this.type = type;
        this.cpi = cpi;
        this.constant = constant;
    }

    @Override
    public boolean equals(Object o) {
        if (o instanceof HotSpotConstantPoolObject) {
            HotSpotConstantPoolObject other = (HotSpotConstantPoolObject) o;
            return type.equals(other.type) && cpi == other.cpi && constant.equals(other.constant);
        }
        return false;
    }

    @Override
    public int hashCode() {
        return constant.hashCode() + cpi + type.hashCode();
    }

    @Override
    public JavaKind getJavaKind() {
        return constant.getJavaKind();
    }

    @Override
    public boolean isNull() {
        return constant.isNull();
    }

    @Override
    public boolean isDefaultForKind() {
        return constant.isDefaultForKind();
    }

    @Override
    public Object asBoxedPrimitive() {
        return constant.asBoxedPrimitive();
    }

    @Override
    public int asInt() {
        return constant.asInt();
    }

    @Override
    public boolean asBoolean() {
        return constant.asBoolean();
    }

    @Override
    public long asLong() {
        return constant.asLong();
    }

    @Override
    public float asFloat() {
        return constant.asFloat();
    }

    @Override
    public double asDouble() {
        return 0;
    }

    @Override
    public String toValueString() {
        return getCpType().getName() + getCpi();
    }

    @Override
    public String toString() {
        return super.toString() + "@" + toValueString();
    }

}
